*{
  margin: 0;
  padding: 0;
}

li{
  list-style-type: none;
}

a{
  text-decoration: none;
  color: #000;
}

img {
  display: block;
}

/deep/ .el-button{
  padding: 10px 20px;
}

pre {
  white-space: pre-wrap;
}